From f69143e0991d3b28219a088a7273d1b6d36b33ff Mon Sep 17 00:00:00 2001
From: Sven Oppermann <sven.oppermann@iosus.de>
Date: Sun, 1 Feb 2026 22:51:37 +0100
Subject: [PATCH] Added "SourceTempInput" for Vaillant HMU (08)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The value was missing in the configuration.
I verified the register on a live system (Vaillant flexoTHERM) by comparing hex dumps with the display values.

- **Reference (SourceTempOutput):**
  - Register: `32 27`
  - Display value: **7.5 °C**
  - Hex value: `0x79` (Decimal 121)
  - Calculation: 121 / 16 = **7.56 °C** (Matches)

- **New Sensor (SourceTempInput):**
  - Register: `32 22`
  - Display value: **7.1 °C**
  - Hex value: `0x74` (Decimal 116)
  - Calculation: 116 / 16 = **7.25 °C** (Matches within tolerance)

The definition uses the same decoder (D2C) as SourceTempOutput.
---
 src/vaillant/08.hmu.tsp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/vaillant/08.hmu.tsp b/src/vaillant/08.hmu.tsp
index ec31e9fb..8ea59e64 100644
--- a/src/vaillant/08.hmu.tsp
+++ b/src/vaillant/08.hmu.tsp
@@ -208,6 +208,12 @@ namespace Hmu {
     value: temp;
   }
 
+  @inherit(r_2)
+  @ext(0x22)
+  model SourceTempInput {
+    value: temp;
+  }
+
   @inherit(r_2)
   @ext(0x27)
   model SourceTempOutput {